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Priority to JP912074ApriorityCriticalpatent/JPS50102708A/ja
Priority to DE2409865Aprioritypatent/DE2409865A1/de
Priority to FR7407243Aprioritypatent/FR2220010B1/fr
Priority to IT4894374Aprioritypatent/IT1015829B/it
Publication of JPS50102708ApublicationCriticalpatent/JPS50102708A/ja